Dashboard Regions Weather Stations Radar Alerts Glossary
Contact About
Log In

Register for an account and never miss a forecast again!

Register

Avalanche Forecast

Archived

Dec 22nd, 2024–Dec 23rd, 2024

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Below Threshold.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Below Threshold.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Below Threshold.

Regions

Yukon, Tutshi, Wheaton, White Pass East, White Pass West.

Assess for wind slab as you travel into exposed terrain.

Wind slabs may not bond well to the hard surface they will form over.

Confidence

Moderate

Avalanche Summary

No new avalanches have been reported in the region.

Observations have been limited. Please consider sharing your observations through the Mountain Information Network.

Snowpack Summary

By mid day on the 22nd around 15 cm of new snow may have fallen. This new snow will be accompanied by east and south wind forming wind slabs in exposed terrain.

10 to 30 cm of snow sits above a firm, supportive crust that extends up to 1500 m.

The remainder of the snowpack has no layers of concern. Snowpack depths range from about 70 to 180 cm.

Weather Summary

Sunday Night

Mostly cloudy with up to 8 cm of snow. 20 to 40 km/h east ridgetop wind. Treeline temperature -13 °C.

Monday

Cloudy in the morning and clearing late afternoon. 5 to 10 cm of snow. 30 to 60 km/h south ridgetop wind. Treeline temperature rising to -2 °C.

Tuesday

Mostly cloudy with around 5 cm of snow. 30 to 60 km/h south ridgetop wind. Treeline temperature -9 °C.

Wednesday

Cloudy with around 5 cm of snow. 10 to 30 km/h east ridgetop wind. Treeline temperature -5 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • Recent wind has varied in direction, so watch for wind slabs on all aspects.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.